Push xh, Push xl, Push xh onto stack – Epson S1C6200 User Manual
Page 75: Push xl onto stack
Source Format:
Operation:
OP-Code:
Type:
Clock Cycles:
Flag:
Description:
Example:
Source Format:
Operation:
OP-Code:
Type:
Clock Cycles:
Flag:
Description:
Example:
MSB
LSB
MSB
LSB
C –
Z –
D –
I –
C –
Z –
D –
I –
S1C6200/6200A CORE CPU MANUAL
EPSON
69
3 INSTRUCTION SET
PUSH XH
Push XH onto stack
PUSH XH
SP'
←
SP - 1, M(SP')
←
XH
1
1
1
1
1
1
0
0
0
1 0
1
FC5H
VI
5
Not affected
Not affected
Not affected
Not affected
Decrements the stack pointer by 1 and loads the contents of XH, the four high-
order bits of XHL, into the data memory location addressed by SP.
PUSH XH
SP
CC
CB
Memory (CBH)
0000
1000
XH register
1000
1000
PUSH XL
Push XL onto stack
PUSH XL
SP'
←
SP - 1, M(SP')
←
XL
1
1
1
1
1
1
0
0
0
1 1
0
FC6H
VI
5
Not affected
Not affected
Not affected
Not affected
Decrements the stack pointer by 1 and loads the contents of XL, the four low-order
bits of XHL, into the data memory location addressed by SP.
PUSH XL
SP
D0
CF
Memory (CFH)
1111
0110
XL register
0110
0110
2
3
2
2
2
1
2
0
M(SP) =
= XH
2
0
2
1
2
2
2
3
2
3
2
2
2
1
2
0
M(SP) =
= XL
2
0
2
1
2
2
2
3